Question

Explain modern periodic Law and the present form of the periodic table...​

Answer 1

$\bold{Answer}$

1. It means if the elements are arranged in the order of increasing atomic number . The element with similar properties are repeated after certain regular intervals.

2. The physical features of modern periodic table are ...

↗ Based on increasing order of atomic number.

↗ Consists of 18 vertical columns ( groups - 1 to 18) and 7 horizontal rows numbered from ( 1 to 7 ).

3. Bohr's periodic table is divided into 4 blocks ( S , P , D and F's block ).

S and P block - Normal or representative

D block - Transition

F block - Inner transition

4. Metals and Non metals are separated by transition elements.

Answer 2

➤1. It means if the elements are arranged in the order of increasing atomic number . The element with similar properties are repeated after certain regular intervals.

2. The physical features of modern periodic table are ...

↗ Based on increasing order of atomic number.

↗ Consists of 18 vertical columns ( groups - 1 to 18) and 7 horizontal rows numbered from ( 1 to 7 ).

3. Bohr's periodic table is divided into 4 blocks ( S , P , D and F's block ).

S and P block - Normal or representative

D block - Transition

F block - Inner transition

4. Metals and Non metals are separated by transition elements.